RADIOGRAPHIC IMAGE DETECTOR

摘要

The invention provides radiographic image detectors in which a scintillator layer itself exhibits improved flexibility and is prevented from crystal breakage while the scintillator layer and a photoelectric conversion element are bonded to each other via uniform thickness without forming defects.;The radiographic image detector includes a substrate, a scintillator layer with a columnar crystal structure disposed on the substrate, an optical coupling layer and a photoelectric conversion element. The scintillator layer has a flexural elastic modulus Esc satisfying relationships represented by Expression (I) as measured by a cantilever test in which the scintillator layer disposed on the substrate is held in a cantilever condition and is bent under a uniformly distributed load with the columnar crystal structure side being bent outward:;Esc≦−0.43M+372 and Esc≧−0.16M+98  (I);(In Expression (I), Esc is the flexural elastic modulus (kg/mm2) of the scintillator layer and M is the thickness (μm) of the scintillator layer).

主权项

1. A radiographic image detector comprising a substrate, a scintillator layer with a columnar crystal structure disposed on the substrate, an optical coupling layer and a photoelectric conversion element,
the scintillator layer having a flexural elastic modulus Esc satisfying relationships represented by Expression (I) as measured by a cantilever test in which the scintillator layer disposed on the substrate is held in a cantilever condition and is bent under a uniformly distributed load with the columnar crystal structure side being bent outward:
Esc≦−0.43M+372 and Esc≧−0.16M+98  (I) (in Expression (I), Esc is the flexural elastic modulus (kg/mm2) of the scintillator layer and M is the thickness (μm) of the scintillator layer).